[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR600.108-78] [Page 886] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 600_FUEL ECONOMY OF MOTOR VEHICLES--Table of Contents Subpart B_Fuel Economy Regulations for 1978 and Later Model Year Automobiles_Test Procedures Sec. 600.108-78 Analytical gases. The analytical gases for all fuel economy testing must meet the criteria given in Sec. 86.114 of this chapter.